No. If anything she is underrated.
She is constantly overlooked because, despite the fact she has an awesome voice, she just doesn't know how to use it.
Not every song has to be full throttle: (
I Love You Porgy performance at the Grammy Nominations).
Add in the fact that she makes herself look trashy when she has natural beauty, has a somewhat questionable personality and for whatever reason decided to dumb herself down musically with Bionic and the odds are stacked against her when they really don't have to be.